He becomes deputy of ShadowClan under his father's rule, and struggles to uphold his father's wishes and be the leader his Clanmates want him to be. When Dovewing flees the Clans to give birth to his kits, Tigerheart follows her, and she gives birth to Shadowkit, Lightkit, and Pouncekit. The family returns to the Clans, and Tigerheart is mortally injured saving his Clanmates. He is revived at the Moonpool and given his nine lives as Tigerstar. As leader, he revitalizes ShadowClan and proves himself an ambitious and strong-headed leader.
He is born as Tigerkit to Tawnypelt and Rowanclaw, along with his brother and sister, Flamekit and Dawnkit, in ShadowClan. He was named after his maternal grandfather, Tigerstar. Eventually, he is apprenticed to Oakfur who also mentored his mother. During his apprenticeship, ShadowClan loses faith in StarClan, forcing Tawnypelt take her kits to ThunderClan, where Tigerpaw is apprenticed to Brackenfur for the time being, with Brackenfur also being his mother's original mentor when she was in ThunderClan. He also meets his uncle, the ThunderClan deputyBrambleclaw. He, his siblings, and Lionblaze, Hollyleaf, and Jaypaw create a fake sign to make Blackstar believe in StarClan again, which is successful and Tigerpaw goes back home with his family soon afterwards.
"That doesn't mean I have to be like him. He almost destroyed ShadowClan once before. I wasn't going to let him do it again!"
—Tigerheart to Thistleclaw during the Great Battle The Last Hope, page 292
He becomes a warrior with the name Tigerheart, and is chosen by Blackstar to go with Toadfoot to investigate whythe lakewas drying up along with six other warriors from the other Clans. During this time, he forms a relationship with the ThunderClan apprentice Dovepaw, and she falls for him. After returning to the Clans, he sneaks out of camp at night to meet Dovepaw, and is eventually revealed that he is training in the Place of No Stars under guidance of Brokenstar and Tigerstar. Tigerheart forms an uneasy relationship with Ivypaw, Dovepaw's sister, who is also training in the Dark Forest. His brother, Flametail, drowns in the lake, and Tigerheart stands with Dawnpelt as she believes Jayfeather drowned their littermate. Eventually, the Dark Forest attacks the Clans, and Tigerheart chooses to side with his Clan rather then the undead. During this, Dovewing says their relationship cannot continue due to them being of different Clans. The Clans win the fight, and Tigerheart sadly accepts the future.
"Tigerstar only cares about what's best for Tigerstar. [...] He abandoned his Clan and kin when they needed him. Then he came back when it suited him. And his mate is no better. Dovewing broke the warrior code and had kits with a warrior from another Clan, and then left her own Clan to be with him and took her kits with her. [...] A leader is supposed to set an example for their Clan. What kind of example has Tigerstar set?"
—Sandynose to Frecklewish, Mintfur and Violetshine about Tigerstar The Raging Storm, page 27
His father becomes the leader of ShadowClan, and Tigerheart becomes the uncle to Dawnpelt's kits, Strikepaw, Juniperpaw and Sleekpaw, the latter of which he is the appointed mentor to. Upon the death of Crowfrost to yellowcough, Tigerheart is appointed deputy in his place, although he, Tawnypelt, and Rowanstar leave for ThunderClan when Darktail takes over ShadowClan. He plays a pivotal part in driving out the rogues, though when ShadowClan is reinstated, he leaves ShadowClan to be with Dovewing, who he had reconciled with and also expecting his kits. His departure causes Rowanstar to disband ShadowClan to join SkyClan.
Tigerheart returns to the Clans and reforms ShadowClan as its new leader. From his time away, Dovewing gave birth to their kits, Lightkit, Pouncekit, and Shadowkit, and he also brings threestrangecats to become warriors, as well as former ShadowClan cats. His new leadership mantle is not well accepted by the other Clans, who believe that Tigerstar is too young and will suffer the same fate as Rowanclaw, as well as sharing his name and leadership position with his infamous grandfather. Tigerstar instead aggressively tells the other Clans that they do not tell ShadowClan what to do, and with his leadership, ShadowClan will thrive, and he is heavily supported by his Clanmates. He forms bitter resentment towards SkyClan, and becomes much more headstrong and affirming his leadership. He dismisses the claims about Juniperclaw poisoning SkyClan as pure rumor, and becomes the driving force for the conflict with SkyClan. After Juniperclaw's death and SkyClan's return to the lake, he appoints Cloverfoot as his new deputy and admits that he was so focused on making ShadowClan whole again that he forgot that there needs to be five Clans by the lake, and helps readjust territories so each Clan is equal.
During a harsh winter, Shadowpaw receives terrible visions about "codebreakers" and is troubled when his mother is accused of being one. Tigerstar reveals to his son that Dovewing did break the code to be with him, but insists Dovewing's true place is in ShadowClan. He grows angry when the other Clans refuse to allow ShadowClan to take part in freeing the Moonpool because of Shadowpaw, and often confides with Puddleshine, Cloverfoot and Tawnypelt. His son also receives a vision about the Clans fighting with Tigerstar and Bramblestar viciously attacking each other.
He is proud of his son when he receives his full name, and becomes annoyed and angry when Bramblestar demands Tigerstar punish his codebreakers. Tigerstar refuses to conform to Bramblestar's bullying and later learns from Squirrelflight that Bramblestar is an impostor, and is shown the true Bramblestar's ghost from Rootpaw. Convinced, Tigerstar rallies ShadowClan against the impostor and gives Squirrelflight a place in ShadowClan.
In Tigerheart's Shadow, after ShadowClan is restored after the Kin's rule, Tigerheart feels torn between supporting Rowanstar and trying to lead his Clanmates, as they had only seemed to take orders from him. The reveal of Dovewing's plight to give birth to their kits away from the Clans and Puddleshine's terrible visions forces Tigerheart to leave ShadowClan. He finds Dovewing with the guardian cats in a Twolegplace where she gives birth to Shadowkit, Pouncekit, and Lightkit. Tigerheart works with Fierce and takes on a more leadership role during his experience away from ShadowClan.
Tigerheart realizes that Puddleshine's visions were fore sighting him as the true leader of ShadowClan and decides to take his family back to the Clans. Some of the guardian cats, Spire, Blaze, Ant and Cinnamon, join him. On their way back, Tigerheart discovers Rippletail, Berryheart, Cloverfoot and Sparrowtail hiding in a Twoleg nest, and he convinces them to return to ShadowClan with his patrol. Along the way, Tigerheart is killed by an owl after saving Hollowkit by suffering critical internal injuries, and he joins StarClan. However, Rowanclaw, now dead, informs his son that he is still needed in the living world, and after the patrol carries Tigerheart's body to the Moonpool, Tigerheart is resurrected with eight lives to reinstate ShadowClan, becoming Tigerstar. After being revived, Tigerstar is reunited with his family and Clanmates and leads them home.
In Squirrelflight's Hope, Tigerstar's attitude is making it uneasy for Bramblestar to try and keep relations peaceful between the Clans, and Tigerstar aims to expand his territory so his cats have enough to eat. When Stonewing and Strikestone are attacked by the Sisters, and Strikestone permanently maimed by them, Tigerstar grows livid and demands that the group be driven out in retaliation, as well as the territory they occupy would be beneficial for SkyClan. He helps lead the Clans in the battle against the Sisters, but when he realizes there are kits, he attempts to call off the attack, to no avail. When the Sisters leave, Tigerstar is content with the rearranged borders.
This section summarizes Tigerstar's significant Super Editions appearances. If you're looking for a full list, find one here!
In Tawnypelt's Clan, Tigerstar appoints Tawnypelt as his deputy. She struggles to adjust to the new ShadowClan under Tigerstar's leadership. When Shadowkit has violent seizures accompanied by terrible visions of Tribe of Rushing Water's destruction, Tawnypelt firmly believes Shadowkit is meant to go there. However, Tigerstar refuses, and Tawnypelt accuses him of not listening to any cat and acting like the original Tigerstar. While in the mountains, Rowanclaw appears to Tawnypelt in a dream, and urges her to let Tigerstar find his footing as leader. After they return to the Clans, Tawnypelt steps down as Tigerstar's deputy, believing her son will need a younger deputy if ShadowClan is to survive the changes.
Tigerstar (AVoS)'s icon on the Warriors family tree
Tigerstar (AVoS)'s icon on the Warriors website
Tigerstar's leader ceremony
With this life I give you strength. Don't let softness sway you from what must be done for your Clan.
With this life I give you courage. Fear will always pull at your tail, but the courage I give you now will always draw you on.
With this life I give you compassion. Love your Clan as you love your kits. Forgive them their flaws and love them even when they fail you.
With this life I give you hope. As long as hope burns in your heart. It will burn in the hearts of your Clanmates.
I am Yellowfang, once of ShadowClan. With this life, I give you forgiveness. Forgiveness will give you more power than vengeance will ever bring.
I am Sagewhisker. With this life, I give you persistence. Don't let failure sap your determination or rejection change your mind. A true leader tries as many times as it takes to succeed.
Tigerheart. Fear of failure has kept you too long from leadership. But leadership is your destiny, and one that you must embrace if you are to save your Clan. So with this life I give you acceptance. Accept with all your heart what you cannot change, and fear will vanish.
I, Raggedstar, give you this life for loyalty. A leader's loyalty belongs only to his Clan. Let loyalty be your heartbeat, for when it stops, so will you.
I wish I could still walk at your side. I wish I could help you reunite our Clan. With this life I give you love. You have known so much, but still have much to give. Leadership without love will never be enough to draw your Clan from the shadows. Let your heart lead when your head does not know the way.
This has never been done before. You have already used up one life, but there are eight remaining. Use them as your used the first—with courage and for the good of others.
There must always be five Clans. Where there is sky, thunder, wind, and river, there must also be shadow.
You are the only one who can bring ShadowClan back.